When my truck sits overnight or for an extended period of time (8 hours), when I start it - it labors and chugs and sounds like its going to die. I give it some gas - once driving it seems fine?

When my truck sits overnight or for an extended period of time (8 hours), when I start it - it labors and chugs and sounds like its going to die. I give it some gas - once driving it seems fine? 1 Answer

my 95 z71 gmc 4x4 350 tbi runs great half the time but sometimes when warm it skips and cuts out like its flooded. when shut off or stalls it wont start unles gas is held to floor and once it starts i 4 Answers

i have to hold gas to floor to keep it running it eventually clears out blowing smoke and will run

My 96 gmc sierra does not idle right when I start it but levels out after and it smell like gas why? 2 Answers

When I start it it takes around 5 to 10 seconds to idle right and it constantly smells like gas I wanna fix it but what's my problem?

04 gmc sierra 1500 5.3 died on me on the highway got it towed home starting going at it, hooked two different scanners to it and not throwing any codes (ecm is working bc the map was reading correctly but also the rpm was zero) anyways checked fire none checked injectors they wasnt working either(built fuel pressure then unplugged fuel relay then turned engine over and the pressure stayed the exact same) i assume it might be the crank sensor but i would think it would throw a code, anyways came back this morning and before doing anything for the hell of it i checked the gas cap and tightened it and it fired up perfect three different times and the last time i let it run and it died after bout 45 seconds (fuel pressure reads 55) and after it died its doing the same thing cranks but wont fire or start 1 Answer

died on me on the highway got it towed home starting going at it, hooked two different scanners to it and not throwing any codes (ecm is working bc the map was reading correctly but also the rpm was...

why is my truck hard to start.. hard to start when it does start it idle fine but when I give it gas it like it wants to or something then once it is warm it idle and drives fine code p0300 and p0420 have been read .. I need help please 3 Answers